What does four mean?
Four is the cardinal number that follows three and precedes five, represented by the digit 4 and, in Roman numerals, by IV. As one of the most fundamental words in English counting vocabulary, it appears everywhere from arithmetic to everyday scheduling — 'four o'clock,' 'a four-week course,' 'the four seasons.' Beyond pure number, 'four' can name a set or unit of four people or things, as in a doubles team in tennis or bridge or a musical quartet, and it features in established idioms such as 'on all fours,' meaning comparable in every respect. The word carries no particular emotional connotation, though in several East Asian languages its sound resembles the word for death, giving it unlucky associations in those cultures. Its derivatives — fourth, foursome, fourfold — extend its usefulness across ordinal, collective, and multiplicative senses.
The cardinal number equal to three plus one; the figure 4.
"Two fours make eight."
Often used in reference to time ('at four') or age ('aged four').
A group or unit of four people or things, especially a team or set of four.
"The rowing four took silver at the regatta."
Expressing the quantity four; denoting the number 4.
"The recipe calls for four eggs."
Pluralized normally as 'fours', chiefly in phrases like 'in fours' or references to dice and cards.
"The children marched into the hall in fours."
In East Asian cultures the number four is often avoided because it sounds like the word for death — many buildings there simply skip the fourth floor.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of four
Four descends from the Old English 'feower', which came from Proto-Germanic *fedwor-, itself from the Proto-Indo-European root *kʷetwer- meaning 'four'. This ancient root is shared with Latin 'quattuor', from which English derives quarter, quatrain, and quadruplet, and with Greek 'tettares', the source of tetrad and related terms. Cognates appear throughout the Germanic family, including German 'vier' and Dutch 'vier'.
Related word forms
How four is actually used
As a numeral, 'four' is typically written as a digit (4) in mathematical contexts but spelled out in formal prose when standing alone. In British English it often appears in idioms such as 'on all fours' (meaning level or equivalent). The word is neutral in register.
Easily confused with four
'Four' is the number 4, while 'for' is a preposition indicating purpose or recipient.